Starred in Tim Burton movies Beetlejuice and Batman, as well as comedies Multiplicity and Mr. Mom.
He briefly worked as a TV cameraman for a local public television station in Pittsburgh.
Though he has been in many dark and serious roles, he is also a talented comedian. His real surname was Douglas, but fearing confusion with the other actor, he chose Keaton instead.
He had a six-year relationship with actress Courtney Cox from 1989 to 1995.
He was in Beetlejuice with Alec Baldwin.